/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.webapi.controller;

import static org.hisp.dhis.dxf2.webmessage.WebMessageUtils.conflict;
import static org.springframework.http.MediaType.APPLICATION_JSON_VALUE;

import java.util.Collection;
import java.util.HashSet;
import java.util.List;

import org.hisp.dhis.common.DhisApiVersion;
import org.hisp.dhis.dataanalysis.MinMaxDataAnalysisService;
import org.hisp.dhis.dataelement.DataElement;
import org.hisp.dhis.dataset.DataSet;
import org.hisp.dhis.dataset.DataSetService;
import org.hisp.dhis.dxf2.webmessage.WebMessageException;
import org.hisp.dhis.minmax.MinMaxDataElementService;
import org.hisp.dhis.minmax.MinMaxValueParams;
import org.hisp.dhis.organisationunit.OrganisationUnit;
import org.hisp.dhis.organisationunit.OrganisationUnitService;
import org.hisp.dhis.setting.SettingKey;
import org.hisp.dhis.setting.SystemSettingManager;
import org.hisp.dhis.webapi.mvc.annotation.ApiVersion;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseStatus;

/**
 * min max value endpoint to to generate and remove min max values
 *
 * @author Joao Antunes
 */
@Controller
@RequestMapping( value = MinMaxValueController.RESOURCE_PATH )
@ApiVersion( { DhisApiVersion.DEFAULT, DhisApiVersion.ALL } )
public class MinMaxValueController
{
    public static final String RESOURCE_PATH = "/minMaxValues";

    @Autowired
    private MinMaxDataElementService minMaxDataElementService;

    @Autowired
    private MinMaxDataAnalysisService minMaxDataAnalysisService;

    @Autowired
    private DataSetService dataSetService;

    @Autowired
    private OrganisationUnitService organisationUnitService;

    @Autowired
    private SystemSettingManager systemSettingManager;

    @PostMapping( consumes = APPLICATION_JSON_VALUE )
    @PreAuthorize( "hasRole('ALL') or hasRole('F_GENERATE_MIN_MAX_VALUES')" )
    @ResponseStatus( HttpStatus.NO_CONTENT )
    public void generateMinMaxValue( @RequestBody MinMaxValueParams minMaxValueParams )
        throws WebMessageException
    {
        List<String> dataSets = minMaxValueParams.getDataSets();
        String organisationUnitId = minMaxValueParams.getOrganisationUnit();

        if ( dataSets == null || dataSets.isEmpty() )
        {
            throw new WebMessageException( conflict( " No datasets defined" ) );
        }

        OrganisationUnit organisationUnit = this.organisationUnitService.getOrganisationUnit( organisationUnitId );
        if ( organisationUnitId == null )
        {
            throw new WebMessageException( conflict( " No valid organisation unit" ) );
        }

        Collection<DataElement> dataElements = new HashSet<>();

        for ( String dataSetId : dataSets )
        {
            DataSet dataSet = this.dataSetService.getDataSet( dataSetId );
            dataElements.addAll( dataSet.getDataElements() );
        }

        Double factor = this.systemSettingManager.getSystemSetting( SettingKey.FACTOR_OF_DEVIATION, Double.class );

        this.minMaxDataAnalysisService.generateMinMaxValues( organisationUnit, dataElements, factor );

    }

    @DeleteMapping( "/{ou}" )
    @PreAuthorize( "hasRole('ALL') or hasRole('F_GENERATE_MIN_MAX_VALUES')" )
    @ResponseStatus( HttpStatus.NO_CONTENT )
    public void removeMinMaxValue( @PathVariable( "ou" ) String organisationUnitId,
        @RequestParam( "ds" ) List<String> dataSetIds )
        throws WebMessageException
    {

        if ( dataSetIds == null || dataSetIds.isEmpty() )
        {
            throw new WebMessageException( conflict( " No datasets defined" ) );
        }

        OrganisationUnit organisationUnit = this.organisationUnitService.getOrganisationUnit( organisationUnitId );
        if ( organisationUnitId == null )
        {
            throw new WebMessageException( conflict( " No valid organisation unit" ) );
        }

        Collection<DataElement> dataElements = new HashSet<>();

        for ( String dataSetId : dataSetIds )
        {
            DataSet dataSet = this.dataSetService.getDataSet( dataSetId );
            dataElements.addAll( dataSet.getDataElements() );
        }

        minMaxDataElementService.removeMinMaxDataElements( dataElements, organisationUnit );

    }
}
